EARNINGS PER SHARE (Computation of Basic and Diluted Earnings per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2015	Jan. 01, 2015	Dec. 26, 2013
Numerator:
Allocation of earnings	$ 153.4	$ 105.6	$ 157.7
Denominator: (in shares)
Weighted average common shares outstanding (in thousands) (in shares)	155,680	155,287	154,826
Basic earnings per share (in dollars per share)	$ 0.99	$ 0.68	$ 1.02
Numerator:
Allocation of earnings for basic computation	$ 153.4	$ 105.6	$ 157.7
Denominator: (in shares)
Number of shares used in basic computation (in thousands) (in shares)	155,680	155,287	154,826
Weighted average effect of dilutive securities (in thousands) (in shares)
Number of shares used in per share computations (in thousands) (in shares)	156,511	156,310	155,723
Diluted earnings per share (in dollars per share)	$ 0.98	$ 0.68	$ 1.01
Class A common stock
Numerator:
Allocation of earnings	$ 130.0	$ 89.5	$ 133.6
Denominator: (in shares)
Weighted average common shares outstanding (in thousands) (in shares)	131,971	131,578	131,117
Basic earnings per share (in dollars per share)	$ 0.99	$ 0.68	$ 1.02
Numerator:
Allocation of earnings for basic computation	$ 130.0	$ 89.5	$ 133.6
Reallocation of earnings as a result of conversion of Class B to Class A shares	23.4	16.1	24.1
Reallocation of earnings to Class B shares for effect of other dilutive securities	0.0	0.0	0.0
Allocation of earnings	$ 153.4	$ 105.6	$ 157.7
Denominator: (in shares)
Number of shares used in basic computation (in thousands) (in shares)	131,971	131,578	131,117
Weighted average effect of dilutive securities (in thousands) (in shares)
Conversion of Class B to Class A common shares outstanding (in shares)	23,709	23,709	23,709
Stock options (in shares)	0	0	2
Restricted stock and performance shares (in shares)	831	1,023	895
Number of shares used in per share computations (in thousands) (in shares)	156,511	156,310	155,723
Diluted earnings per share (in dollars per share)	$ 0.98	$ 0.68	$ 1.01
Class B common stock
Numerator:
Allocation of earnings	$ 23.4	$ 16.1	$ 24.1
Denominator: (in shares)
Weighted average common shares outstanding (in thousands) (in shares)	23,709	23,709	23,709
Basic earnings per share (in dollars per share)	$ 0.99	$ 0.68	$ 1.02
Numerator:
Allocation of earnings for basic computation	$ 23.4	$ 16.1	$ 24.1
Reallocation of earnings as a result of conversion of Class B to Class A shares	0.0	0.0	0.0
Reallocation of earnings to Class B shares for effect of other dilutive securities	(0.1)	0.0	(0.1)
Allocation of earnings	$ 23.3	$ 16.1	$ 24.0
Denominator: (in shares)
Number of shares used in basic computation (in thousands) (in shares)	23,709	23,709	23,709
Weighted average effect of dilutive securities (in thousands) (in shares)
Conversion of Class B to Class A common shares outstanding (in shares)	0	0	0
Stock options (in shares)	0	0	0
Restricted stock and performance shares (in shares)	0	0	0
Number of shares used in per share computations (in thousands) (in shares)	23,709	23,709	23,709
Diluted earnings per share (in dollars per share)	$ 0.98	$ 0.68	$ 1.01